flex_list

Package Overview

Package selection guidance compiled from public package information, community data, and project usage.

FlexList is a Flutter widget designed to create flexible, responsive lists that adapt dynamically within layout constraints. It functions similarly to how Expand widgets behave inside a Wrap, enabling items to grow and shrink based on available space. Ideal for creating fluid, scalable list layouts across different screen sizes and orientations, it enhances UI flexibility without complex custom coding. The package supports all major platforms, making it suitable for cross-platform applications requiring adaptive list behavior.

Use cases

Responsive list layouts
Dynamic item sizing
Cross-platform UI design
Adaptive content containers
Flexible grid-like lists
Nested layout integration

Key features

Auto-resizing list items
Supports all Flutter platforms
Intuitive wrap-like behavior
Minimal configuration required
Seamless integration with existing layouts
Consistent behavior across devices

Suitable for

Developers building responsive UIs
Apps needing adaptive list designs
Cross-platform projects
Layout-heavy applications
UI components requiring dynamic spacing

Considerations

May require careful alignment in complex nested structures
Performance impact with very large datasets
Limited customization beyond basic flex behavior
Not ideal for fixed-size or rigid layouts
Best suited for moderate list sizes
Depends on parent container constraints

Original README

Original README snapshot from the linked source repository. Visit the repository for the latest content.

Flex List

Provides a flexible list layout that behaves as you would expect from Expand widgets within a Wrap.

Features

FlexList puts as many provided elements as possible in one row (like Wrap), but also extends the width of the elements by the remaining space per row. This means that each row is filled to the maximum width.

Getting started

In the pubspec.yaml of your flutter project, add the following dependency:

dependencies:
  ...
  flex_list: <latest_version>

In your library add the following import:

import 'package:flex_list/flex_list.dart';

Usage

The following example shows how to use FlexList. Beside the children property, you can set horizontalSpacing and verticalSpacing to define the spacing between the elements.

Note: Both spacing values are 10 by default.

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
        title: 'FlexList Demo',
        theme: ThemeData(),
        home: Scaffold(
          body: Center(
            child: SizedBox(
                width: 300,
                child: FlexList(
                  horizontalSpacing: 5,
                  verticalSpacing: 10,
                  children: [
                    for (var i = 0; i < 10; i++)
                      Container(
                        color: Theme
                            .of(context)
                            .colorScheme.surfaceContainer,
                        padding: EdgeInsets.symmetric(
                            horizontal: 20 + 20 * (i % 4), vertical: 10),
                        child: Text("Item $i"),
                      )
                  ],
                )),
          ),
        ));
  }
}

Rendering of above Example

Additional information

This package was written because of the lack of such layout function. The package repository is maintained on Github and published on pub.dev

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